Melanoma: non healing skin ulcer

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4 y/o female with small non-pruritic macular skin lesion x approx. 2 months. Partially responsive to OTC topical steroid.](https://app.figure1.com/case-detail/744d139b-ca2b-4fb5-b67d-d7ef45ba0eff)

A 50 yo male patient came in with skin features as shown. He stated that the hyperpigmentation and hardening of the skin appears in the summer and disappears in the winter. It’s been an ongoing process for more than 3 years. What would be the next step in the diagnosis, management and treatment of this patient?](https://app.figure1.com/case-detail/7983825f-80b6-4e6f-83c4-76d6740876d2)

50 yes or female with these skin lesions on her lower extremities for about 12 months has tried topical low to medium strength steroid cream with limited effect. Please kindly provide diagnosis and possible treatments. Thank you. ](https://app.figure1.com/case-detail/910d1963-5ab8-47f2-a657-f082cf947d2f)

Cyst excised 2 weeks after incomplete excision with poor healing.](https://app.figure1.com/case-detail/945dbb84-f5ea-4334-ad70-a6324783e982)

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A 52-year-old man presented with a 20-minute history of chest pain radiating to the left shoulder and neck, associated with dyspnea and diaphoresis.
He had a history of hypertension, long-term smoking, and a sedentary lifestyle.
On physical examination, bibasilar crackles were noted on lung auscultation. An electrocardiogram (ECG) was performed in the primary care setting, and the patient was promptly referred to the emergency department.](https://app.figure1.com/case-detail/ae0fe999-6875-4474-94f0-ad823dbb9b3a)

A 28-year-old woman presented with a 3-day history of intense pruritus over the lower back. She reported no recent travel or exposure to new environments. She cares for a small kennel with approximately eight dogs rescued from the streets.
Physical examination revealed multiple small vesicles, some clustered and others scattered, predominantly involving the lumbar region and the left gluteal area.](https://app.figure1.com/case-detail/c271070f-2bc7-4052-9895-635277e1a7d5)

A 4-month-old male infant presented with skin lesions localized to the chin for the past 3 days. Physical examination revealed multiple small pustules with surrounding inflammatory signs on the chin, along with a few scattered papules on the chest.](https://app.figure1.com/case-detail/48f41642-b9db-4089-b120-a94ee52328de)

patient in late teens presenting after a collapse, no chest pain, no previous cardiac history, no history of sudden death in family, are there any features in this ekg that would warrant further work-up or is this just a pediatric ekg?](https://app.figure1.com/case-detail/2af390e1-ace8-40ed-ba1c-98fb2d72f4c5)